For a few years, Huawei has been involved in a court battle against Unwired Planet, a company from the US that owns a lot of networking patents obtained from Ericsson. It now looks like the Chinese manufacturer has lost and will have to pay up in order to avoid a sales ban in the UK. The High Court has ruled that Huawei has to pay a royalty to the company for each smartphone it sells around the world, not just in the UK.